CN106245656B - A kind of construction method for the supporting improving sidesway for master and slave type foundation pit group - Google Patents
A kind of construction method for the supporting improving sidesway for master and slave type foundation pit group Download PDFInfo
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- CN106245656B CN106245656B CN201610626109.5A CN201610626109A CN106245656B CN 106245656 B CN106245656 B CN 106245656B CN 201610626109 A CN201610626109 A CN 201610626109A CN 106245656 B CN106245656 B CN 106245656B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of construction methods of supporting for improving sidesway for master and slave type foundation pit group, are related to civil construction pattern foundation pit supporting structure field.The present invention in the building enclosure of the side Zi Keng by increasing supporting water-retaining structure plate, and carry out relevant parameter optimization, make have more robust support system between master and slave type foundation pit, it avoids mother and cheats to the side Zi Keng and lateral displacement occurs, and plays the role of water proof, and then avoid surrounding soil and the disasters such as sedimentation occur.Meanwhile the working condition requirement of construction is not high, project cost is low, and may be implemented to recycle, and suits the green engineering theory of sustainable development.
Description
Technical field
The present invention relates to civil construction pattern foundation pit supporting structure fields, and in particular to a kind of to improve sidesway for master and slave type foundation pit group
The construction method of supporting.
Background technique
With the intensive development in soft soil foundation building city, deep-foundation pit engineering is more and more, since town site is got over
Come more nervous, causes largely to build more crypto set, underground installation is more intricate around foundation pit.It is more and more combined, more
The regional super-giant foundation pit of kind city function is at the complicated foundation pit group appearance cheated in hole even hole, hole, including novel
Master and slave type foundation pit, it refers to the foundation pit group of small one and large one foundation pit closely type, and this structure is built in city foundation pit now
In it is relatively conventional, however, adjacent multiple deep big foundation pits are in succession or synchronous excavate can generate than single excavation of foundation pit surrounding enviroment
More complicated influence, the harm of master and slave type group foundation pit construction are the decompression construction of two foundation pit hydraulic pressure: applying to meet deep pit monitor
Work requirement, certainly will require a large amount of precipitation, and long-term precipitation, lateral displacement of pit necessarily be caused, to neighboring buildings, road, pipeline band
To endanger.In the construction process, there is also apparent interactions between the foundation pit of master and slave type, as after by multi-level complexity foundation pit group
Construction foundation pit settles speed to construction foundation pit enclosure wall, support system, the harm that structure generation is completed and structure after the completion
Rate unevenly caused by problem of Cracking.
Currently, China's processing method main for this lateral displacement of pit adds suspension roof support system using campshed, off-load is simultaneously
Reasonably optimizing is carried out to anchored pile supporting.Since level of ground water is higher, and the depth of mollisol is deeper, if carrying out piled anchor branch
If shield, the stabilization of foundation pit cannot be effectively ensured, so as to cause the infiltration of soft soil foundation, lack the validity of engineering, exist
Some potential safety problems.
Summary of the invention
The embodiment of the invention provides a kind of construction methods of supporting for improving sidesway for master and slave type foundation pit group, to solve
The problem of lateral displacement of pit certainly exists in the prior art.
The embodiment of the invention provides a kind of construction methods of supporting for improving sidesway for master and slave type foundation pit group, comprising:
According to engineering mother's foundation pit size, making ruler mark position is used in specified construction operation area；In label
Campshed and enclosure wall, earth excavation are set around position, dig out rectangular hole one, one week baffle one is set in rectangular one inside of hole,
The uniform concrete of a layer thickness is injected between rectangular hole one and baffle one, the region that the concrete layer surrounds is mother
Hole；
Size is cheated according to engineering subbase, making ruler mark position is used in specified construction operation area；In label
Campshed and enclosure wall, earth excavation are set around position, dig out rectangular hole two, one week baffle two is set in rectangular two inside of hole,
The uniform concrete of a layer thickness is injected between rectangular hole two and baffle two, the region that the concrete layer surrounds is son
Hole；
Size is cheated according to the subbase, selection measures on the left of sub- hole, and the concrete slice width according to sub- hole
Degree is marked at the buried depth of one times of distance of the concrete layer width in distance hole, while being disposed in mark position
Supporting water-retaining structure plate；
The supporting water-retaining structure plate includes rubber layer and reinforcing bar, and the steel-bar arrangement is in rubber layer, the rubber
Layer is macromolecule material, and reinforcing bar is stainless steel material, which is that the reinforcing bar of 108@0.4m of Φ is carried out triangle
The binding of matrix form, then it is vertical and horizontal it is regular be combined, meanwhile, the steelframe made is put into prefabricated mold, will
In the rubber injection mold of liquid, emptying gap processing is carried out；The supporting construction of reinforcing bar guarantees the stability in foundation pit construction, will not
Sidesway occurs, the rubber of high molecular material can guarantee the water-resisting property of structure, avoid the generation of the infiltration accident in construction.
Preferably, in digging process, real-time monitoring is carried out to the surrounding building in female hole, sub- hole, it is ensured that work progress
Safety.
Preferably, the upper surface in the upper surface of the supporting water-retaining structure plate and son hole is located at same level, branch guard block
The lower end surface of water-bound plate is located at the lower section 1.5m of the plane where the bottom Zi Keng, what the width and son of supporting water-retaining structure plate were cheated
Concrete layer width is equal.
Preferably, the supporting water-retaining structure plate includes rubber layer and reinforcing bar, and the steel-bar arrangement is in rubber layer.
In the embodiment of the present invention, the principle of diaphragm wall secondary supporting is combined, makes have more robust branch between master and slave type foundation pit
Watch box system avoids mother and cheats to the generation lateral displacement of the side Zi Keng and infiltration, and then avoids surrounding soil that the disasters such as sedimentation occur；
By increasing supporting water-retaining structure plate, the compression strength of foundation pit is improved, to improve the overall stability of foundation pit；The present invention
Complicated soft foundation, which is reinforced, has significant advantage, and simple process, effect is obvious, and it is low to save material, project cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is master and slave type foundation pit floor plan；
Fig. 2 is supporting water-retaining structure plate schematic diagram.
Description of symbols:
The rectangular hole 1-1- one, 1-2- baffle one, mother 1-3- hole, the rectangular hole 2-1- two, 2-2- baffle two, 2-3- hole, 3-
Supporting water-retaining structure plate, 4- rubber layer, 5- reinforcing bar.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of construction method of supporting improving sidesway for master and slave type foundation pit group provided in an embodiment of the present invention, including with
Lower step:
Step 1, the stage excavation of master and slave type foundation pit group:
1) it female foundation pit size: according to engineering mother's foundation pit size, is marked in specified construction operation area using making ruler
Position；Campshed and enclosure wall, earth excavation are set around the position of label, one 1-1 of rectangular hole is dug out, in one 1-1 of rectangular hole
One week one 1-2 of baffle is arranged in inside, and the uniform concrete of a layer thickness, institute are injected between rectangular hole one 1-2 of one 1-1 and baffle
Stating the region that concrete layer surrounds is female hole 1-3；
2) sub- hole size: size is cheated according to engineering subbase, making ruler marker bit is used in specified construction operation area
It sets；Campshed and enclosure wall, earth excavation are set around the position of label, two 2-1 of rectangular hole are dug out, in two 2-1 of rectangular hole
One week two 2-2 of baffle is arranged in side, and the uniform concrete of a layer thickness is injected between rectangular hole two 2-2 of two 2-1 and baffle, described
The region that concrete layer surrounds is son hole 2-3；
It should be noted that carrying out real-time monitoring in digging process to buildings around foundation pit, guaranteeing in work progress
Safety.
Step 2, the increase of supporting water-retaining structure plate 3:
Selection measures on the left of sub- hole 2-3, and the concrete layer width according to sub- hole 2-3, in distance hole 2-3
Concrete layer width one times of distance buried depth at be marked, while mark position carry out placement supporting water-retaining structure plate
3；
It should be noted that the upper surface of the supporting water-retaining structure plate 3 and the upper surface of son hole 2-3 are located at same level
Face, the lower end surface of supporting water-retaining structure plate 3 are located at the lower section 1.5m of the plane where the bottom 2-3 of son hole, supporting water-retaining structure plate 3
Width with son hole the concrete layer width of 2-3 it is equal, thus prevent mother cheat to sub- hole seep water.
It should be noted that supporting water-retaining structure plate 3 includes rubber layer 4 and reinforcing bar 5, reinforcing bar 5 is arranged in rubber layer 4
It is interior.
It should be noted that rubber layer 4 is macromolecule material, reinforcing bar 5 is stainless steel material, which isBy 108@0.4m of ΦReinforcing bar carry out the binding of triangular matrix form, then it is vertical and horizontal it is regular be combined, meanwhile, will make
Steelframe be put into prefabricated mold, will liquid rubber injection mold in, carry out emptying gap processing；The supporting construction of reinforcing bar is protected
The stability in foundation pit construction is demonstrate,proved, sidesway will not occur, the rubber of high molecular material ensure that the water-resisting property of structure, avoid and apply
The generation of infiltration accident in work.
The present invention carries out correlation by increasing the suitable supporting water-retaining structure plate of a row in the building enclosure of the side Zi Keng
Parameter optimization makes have more robust support system between master and slave type foundation pit, avoids mother and cheats to the generation lateral displacement of the side Zi Keng, and
And play the role of water proof, and then avoid surrounding soil and the disasters such as sedimentation occur.Meanwhile the supporting water-retaining structure plate, it is benefit
With the combination of water proof rubber material and reinforcing bar, regular addition reinforcing bar, both can guarantee the water proof of its own in rubber material
Property, and flexibility can be enhanced, and it plays a supporting role in the foundation pit of stage excavation, facilitates operation, it is practical.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (2)
1. a kind of construction method for the supporting for improving sidesway for master and slave type foundation pit group characterized by comprising
According to engineering mother's foundation pit size, making ruler mark position is used in specified construction operation area；In the position of label
Surrounding setting campshed and enclosure wall, earth excavation, dig out one (1-1) of rectangular hole, keep off within setting one week on the inside of one (1-1) in rectangular hole
Plate one (1-2) injects the uniform concrete of a layer thickness, the concrete between rectangular hole one (1-1) and baffle one (1-2)
The region that layer surrounds is female hole (1-3)；
Size is cheated according to engineering subbase, making ruler mark position is used in specified construction operation area；In the position of label
Surrounding setting campshed and enclosure wall, earth excavation, dig out two (2-1) of rectangular hole, keep off within setting one week on the inside of two (2-1) in rectangular hole
Plate two (2-2) injects the uniform concrete of a layer thickness, the concrete between rectangular hole two (2-1) and baffle two (2-2)
The region that layer surrounds is son hole (2-3)；
Size is cheated according to the subbase, selection measures on the left of Zi Keng (2-3), and the coagulation according to sub- hole (2-3)
Soil layer width is marked at the buried depth of one times of distance of the concrete layer width in distance son hole (2-3), while in marker bit
It sets and carries out placement supporting water-retaining structure plate (3)；
The supporting water-retaining structure plate (3) includes rubber layer (4) and reinforcing bar (5), and the reinforcing bar (5) is arranged in rubber layer (4)
Interior, the rubber layer (4) is macromolecule material, and reinforcing bar (5) is stainless steel material, which is by Φ
The reinforcing bar of 108@0.4m carries out the binding of triangular matrix form, then it is vertical and horizontal it is regular be combined, meanwhile, the steel that will be made
Frame is put into prefabricated mold, by the rubber injection mold of liquid, carries out emptying gap processing；The supporting construction of reinforcing bar guarantees base
Stability in the construction of hole, will not occur sidesway, the rubber of high molecular material can guarantee the water-resisting property of structure, avoid applying
The generation of infiltration accident in work；
In digging process, real-time monitoring is carried out to the surrounding building of female hole (1-3), sub- hole (2-3), it is ensured that work progress
Safety；
The upper surface of the supporting water-retaining structure plate (3) and the upper surface of Zi Keng (2-3) are located at same level, supporting water blocking knot
The lower end surface of structure plate (3) is located at the lower section 1.5m of the plane where the bottom (2-3) of son hole, the width of supporting water-retaining structure plate (3)
It is equal with the concrete layer width of sub- hole (2-3).
2. construction method as described in claim 1, which is characterized in that the supporting water-retaining structure plate (3) includes rubber layer
(4) and reinforcing bar (5), reinforcing bar (5) setting are interior in rubber layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626109.5A CN106245656B (en) | 2016-08-02 | 2016-08-02 | A kind of construction method for the supporting improving sidesway for master and slave type foundation pit group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626109.5A CN106245656B (en) | 2016-08-02 | 2016-08-02 | A kind of construction method for the supporting improving sidesway for master and slave type foundation pit group |
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| CN106245656A CN106245656A (en) | 2016-12-21 |
| CN106245656B true CN106245656B (en) | 2018-12-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107476315A (en) * | 2017-09-07 | 2017-12-15 | 东北大学 | A kind of prefabricated component and its construction method being directed to close to type foundation ditch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100313720B1 (en) * | 1999-01-13 | 2001-11-15 | 김징완 | Composite Underground Structure Construction Method |
| CN1690317A (en) * | 2004-04-29 | 2005-11-02 | 宝山钢铁股份有限公司 | Method for measuring pipe pile swing resulted from foundation ditch digging |
| CN101545260B (en) * | 2008-03-27 | 2011-03-30 | 中国二十冶集团有限公司 | Method for supporting bored filling pile driven by stirring pile in foundation pit, group pit and middle pit |
| CN201865127U (en) * | 2010-10-18 | 2011-06-15 | 中冶成工上海五冶建设有限公司 | Reinforced waterproof late poured band of basement bottom plate |
| CN104775447B (en) * | 2015-04-13 | 2017-02-01 | 中国电力工程顾问集团中南电力设计院有限公司 | Composite base framework used for power transmission tower in steep mountainous area and construction technology thereof |
| CN105568959A (en) * | 2015-12-28 | 2016-05-11 | 上海市机械施工集团有限公司 | Prefabricated assembly type blocking wall device and construction method thereof |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20161221 Assignee: SHEN KAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Assignor: Northeastern University Contract record no.: X2021210000041 Denomination of invention: A construction method of improving lateral displacement support for sub parent foundation pit group Granted publication date: 20181218 License type: Common License Record date: 20210910 |
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| EE01 | Entry into force of recordation of patent licensing contract |